Calorimetric Apparatus for the Measurement of Reaction Heats at High Temperatures.

Davis, J. D.

doi:10.1021/ie50175a025

Cited by 9 publications

(4 citation statements)

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“…Nevertheless, under a given set of conditions, heat and/or mass transfer will become limiting at some critical particle size, the identification of which requires information on the pertinent heat and mass transfer mechanisms. Three limiting cases are discussed below with the net heat of the pyrolysis reactions being neglected because it appears (Davis and Place, 1924a, b; Davis, 1924; Gentry, 1 9 2 8~) to be small enough to impose only second-order effects on heating under most conditions.…”

Section: Transport Processesmentioning

confidence: 99%

Coal devolatilization and hydrogastification

1976

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a Mineral-mptter-free C and total organic H (that is, including H + Co 11s-moist, mineral-matter-free; cokes-dry, ash-free; 1 kcal/g = bound with 0, S, and N). SCOPEThe formation of hydrates from pure n-butane with water has never been confirmed, and the literature con-Correspondence concerning this paper should be addressed to Donald B. Robinson.tains conflicting opinions on the role of n-butane in hydrate formation from mixtures. T h e object of fie work undertaken in this study was to obtain new experimental

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Section: Transport Processesmentioning

confidence: 99%

Coal devolatilization and hydrogastification

1976

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“…One, the total "heat of carbonization," is defined to include all the sensible and reaction heats involved in carbonization; the other, often called the "heat of decomposition," refers to the reaction heats only after the sensible heats have been removed by calculation or by the use of a differential calorimetric method. The most notable of the data in the literature are those of Terres and coworkers (77-75), Davis and others (4)(5)(6), Weyman (76), and Burke and Parry (2). Work has also been reported upon the heat capacity of chars produced from coal by thermal treatment (73).…”

Section: Literature Surveymentioning

confidence: 99%

“…Since the above computations were completed, extensive tables of thermodynamic properties (4,30,(35)(36)(37) have appeared. Some (4,30) are revisions of tables (11,31) incorporated in the comparisons above, while the data of Price (35-37) are based upon volumetric determinations of Kennedy (13). Values given by Kennedy do not appear to be sufficiently accurate for comparison of virial coefficients with those of Table V.…”

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confidence: 99%

Measurement of the Thermal Properties of Carbonaceous Materials.

Batchelor¹,

Yavorsky²,

Gorin³

1959

J. Chem. Eng. Data

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“…Here the heated body or surface and a measurement of this current furnishes a direct is viewed in contrast with the filament of an incanindication of the rate of heat evolution. 12,13,14,15,16 descent electric lamp, and the current through the It is characteristic of all pure metals that they change latter adjusted until the filament diasppears against their electrical resistance with changes in temperature; the heated background. A reading is then made of and this property has been widely used in measurement the current, from which the temperature of the filament of temperatures.…”

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confidence: 99%

Electrical Measurement of Physical Values The Determination by Electrical and Magnetic Means of Quantities not in Themselves of an Electrical Nature

Borden

1925

Trans. Am. Inst. Electr. Eng.

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Synopsis.-This paper was prepared under instructions from condenser method of determining linear velocities, and the severail thLe Committee on Instruments and Measurements, with a view to inductive methods used in ballistics are treated. forming a basis for the Committee's work in connection with elec-.Measurement of Work: No fine distinction is made between trical measutrements as applied outside of the strictly electrical field. work force and energy: and the standard methods of measuringThe system of classification used is in accordance wvith the natutre of electrical energy with the wattnmeter are omitted, as being outside the the quantity under measurenment, rather than wvith the principle in-scope of the paper. Six types of electrical transmission and absorpvolved; and the subject is treated under nine headings. tion dynamometers are described, and a reference made to recent Measurement of Temperature: There are recogntized two prin-tests, in which the characteristics of a steam locomotive were detercipal methods of electrically measuring temperature; th.e thermo-mined by causing it to pu,ll an electric locomotive, measurement electric circuit, and the effect of temperature upon the resistance of being performed upon the regenerated current of the latter. The many conducting materials. Outlines are izven of the elementary Gilson device for determining over-all efficiency of a powver plant, applications of these, and a number of practical instrutments em-by balancing in an instrument two electrical forces, one representing bodying one or the other of the principles are described. Reference the fuel input, and the other the electrical output is briefly treated. is made to several types of calorimneters em.bodying electrical methods The Measurement of Radiant Energy: Many measurements of temperature measuremnent, and to hygrometers or humridity of radiant energy are mzade by determining the heat generated when meters, in wvhich the principle of the thermocouple has been applied. that energy impinges upon a surface; and these would strictly come A brief description is also given of the optical pyrometer.under the head of temperature measurement. It is realized that it Measurement of Stress, Strain or Small Changes in Physical is difficult to apply the term "non-electrical" or "non-magnetic"Dimensions: General reference is made to the changes which to any radiant phenomenon: and this section of the paper confines take place in both the electrical and mnagnetic characteristics of itself to a bare mention of a number of the best known photoelectric materials when exposed to mechanical stresses, with particular at-cells, used principally in photometry and closely allied work. tention given to resistance e-ffects. Several applications of the carChemical Measurement: The Electrical determination of bon pile in strain determination are mentioned. Recent develop-concentration of the hydrogen ion is treated in some detail. The ments in the use of the piezo-electric effect of certain crystals are de-various electrical a...

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Calorimetric Apparatus for the Measurement of Reaction Heats at High Temperatures.

Cited by 9 publications

References 0 publications

Coal devolatilization and hydrogastification

Coal devolatilization and hydrogastification

Measurement of the Thermal Properties of Carbonaceous Materials.

Electrical Measurement of Physical Values The Determination by Electrical and Magnetic Means of Quantities not in Themselves of an Electrical Nature

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